The pogo looks nice from a distance, but is a flawed tool, especially for drawing.
It is a metal spindle, with an elongated teardrop tail, and with a rubber grip slipped over the front section, retained by a screw-on nib. It is nicely enough weighted, though a bit top heavy for me.
Critically, the nib makes too poor a contact with the body, and unless you lay your finger on the nib while drawing, it is unlikely to make the capacitative link with the screen... I found it just un-usable. I may have gotten a bad example, but it seems to me that the screw-on nib and insulating sleeve are just a basic design failing.
The "spare" nib is an out-of date sponge-type covering. not much use for drawing. I ended up with a Maglus from Applydea, which works wonderfully, and has the plus of both great weighting, great nib feedback, and a magnetic connection to the iPad.